Patents by Inventor Chia-Hsi Chang

Chia-Hsi Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • ACTIVE PHOTONIC DEVICES INCORPORATING HIGH DIELECTRIC CONSTANT MATERIALS
    Publication number: 20240134243
    Abstract: A waveguide structure includes a substrate and a waveguide core coupled to the substrate and including a first material characterized by a first index of refraction and a first electro-optic coefficient. The waveguide structure also includes a first cladding layer at least partially surrounding the waveguide core and including a second material characterized by a second index of refraction less than the first index of refraction and a second electro-optic coefficient greater than the first electro-optic coefficient. The second cladding layer is coupled to the first cladding layer.
    Type: Application
    Filed: October 26, 2023
    Publication date: April 25, 2024
    Applicant: Psiquantum, Corp.
    Inventors: Chia-Ming Chang, Hung-Hsi Lin, Gary Gibson
  • METHOD FOR PREPARING COMPOSITION COMPRISING MESENCHYMAL STEM CELL, EXTRACELLULAR VESICLE PRODUCED BY MESENCHYMAL STEM CELL, AND GROWTH FACTOR, COMPOSITION PREPARED BY THE METHOD, AND USE OF COMPOSITION FOR TREATING ARTHRITIS
    Publication number: 20240124844
    Abstract: The present disclosure provides a method for preparing a composition including mesenchymal stem cells, extracellular vesicles produced by the mesenchymal stem cells, and growth factors, the composition prepared by the method, and use of the composition for treating arthritis. The composition of the present disclosure achieves the effect of treating arthritis through various efficacy experiments.
    Type: Application
    Filed: October 4, 2023
    Publication date: April 18, 2024
    Inventors: Chia-Hsin Lee, Po-Cheng Lin, Yong-Cheng Kao, Ming-Hsi Chuang, Chun-Hung Chen, Chao-Liang Chang, Kai-Ling Zhang
  • METHOD FOR TREATING LIVER CIRRHOSIS BY USING COMPOSITION COMPRISING MESENCHYMAL STEM CELL, EXTRACELLULAR VESICLE PRODUCED BY MESENCHYMAL STEM CELL, AND GROWTH FACTOR
    Publication number: 20240115616
    Abstract: The present disclosure provides a method for treating liver cirrhosis by using a composition including mesenchymal stem cells, extracellular vesicles produced by the mesenchymal stem cells, and growth factors. The composition of the present disclosure achieves the effect of treating liver cirrhosis through various efficacy experiments.
    Type: Application
    Filed: October 4, 2023
    Publication date: April 11, 2024
    Inventors: Po-Cheng Lin, Pi-Chun Huang, Zih-Han Hong, Ming-Hsi Chuang, Yi-Chun Lin, Chia-Hsin Lee, Chun-Hung Chen, Chao-Liang Chang, Kai-Ling Zhang
  • Asynchronous Sigma-Delta Modulation Controller
    Publication number: 20120155140
    Abstract: A constant-frequency asynchronous modulation apparatus includes a current feedback control unit connected to a constant-frequency asynchronous modulation unit. The current feedback control unit includes a reference signal generator and an error amplifier. The reference signal generator provides an error. The error amplifier is connected to a reference signal generator, and provides an error-compensating signal based on the error, and adds up a reference signal and the error-compensating signal to provide a compensation reference signal. The constant-frequency asynchronous modulation unit connected to the current feedback control unit, and includes a hysteresis comparator, an integrator connected to the hysteresis comparator, and a hysteresis boundary generator connected to both of the hysteresis comparator and the integrator.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 21, 2012
    Applicant: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense
    Inventors: Yaow-Ming Chen, Chia-Hsi Chang, Zen-Shan Chang, Kuo-Kuang Jen, Yu-Min Liao